Table of Contents
Which of the following devices help protect against temporary, above-normal voltages? A power surge is a temporary increase in excessive voltage to a computer. A surge protector helps protect against power surges.
Which of the following device types should be plugged into a surge protected only outlet on a UPS unit and not a battery backup outlet?
Due to the periodic high power requirements to heat the fuser roller, a laser printer should not be plugged into a UPS’s battery backup outlets. Instead, a laser printer should only be plugged into the surge protection outlets or directly into a wall outlet.
What does occasional beeping from the UPS mean correct answer?
An occasional single beep from the UPS is normal UPS operations. This means that the UPS is protecting the load.
Which of the following features should you look for when selecting a vacuum cleaner for your cleaning kit select two correct answer?
Two following features you should look for when selecting a vacuum cleaner for your cleaning kit. A Non-static generating, and a vacuum cleaner that blows as well as vacuums.
What rating is used to specify the size of a UPS correct answer?
Some uninterruptible power supply (UPS) systems are rated in kilowatts (kW) and others in kilo-volt-amperes (kVA). KW and kVA simply mean 1,000 watts (W) or 1,000 volt-amperes. The basic rule of physics that watts = volts x amps is based on direct current circuits.
Which tool would you use to measure electrical properties such as voltage amps and resistance?
A multimeter measures electrical properties such as voltage, amps, and resistance. An ammeter is an instrument that measures the flow of electric current in a circuit.
Is it safe to vacuum around PC?
You can vacuum safely around the outdie of the PC or socket outlets providing it is not wet vacuuming.
Which tool should you use to test the drop cable and the connection to the network?
Use a cable tester to test the cable between the computer system and the network switch.
Which of the following is a benefit of good documentation?
Good documentation will: Save you time and money in troubleshooting problems. By keeping adequate documentation, you can reduce the time and money spent troubleshooting. Documentation helps you know when regular maintenance of hardware is required, but does not eliminate maintenance.
What Does a surge protector protect against?
A surge protector guards against the damage that sudden power surges can cause. A surge protector contains metal oxide varistor, or MOV, which diverts any extra voltage to ensure devices receive a consistent power level.
Does a UPS protect against power surges?
A UPS delivers second-level protection against surges; it should never be considered a primary surge protection device. It also continually regulates incoming voltage and provides an internal battery that allows connected equipment to continue running even if the power supply is cut.
Why does UPS keep beeping?
A constant beep (every second or two, and never stopping) generally means the UPS is very low on battery power, and you should shut down immediately. Like anything with a battery, they do need replacement periodically.
Why do UPS trucks beep?
When workers enter the correct truck, they hear a different beep that confirms they’re in the right place. Drivers who discovered errant packages had to travel out of their way to deliver them or summon a supervisor to transfer them to the correct truck.
Why is surge protector beeping?
High-pitched sounds are normally attributed to an Uninterruptible Power Supply or a surge protector with a battery backup feature. You hear the high-pitched noise or beeping in situations where the battery is old or depleted.
Which of the following statement about cleaning monitor and display devices is true?
Which of the following statements about cleaning monitors and display devices is true? You should clean the monitor while it is powered off with a lint-free cloth. Which of the following are common tools used to physically clean the inside of a computer? (Select two.).
Which of the following best describes the purpose for which loopback plugs are used?
Which of the following BEST describes the purpose for which loopback plugs are used? A. Testing ports by returning output signals as input. A printer is behaving erratically and you suspect a faulty parallel port.
What best describes the chipset?
Which of the following BEST describes the chipset? Facilitates communication between the processor, memory, and peripheral devices. You have just finished replacing the motherboard in your friend Ethan’s computer with the same type of motherboard it originally had.
How does UPS determine kVA rating?
Clarify UPS Measurement Units and Their Relationship UPS systems are rated either in kilowatts (kW) or in kilo-volt-amperes (kVA). They can be regarded as the same in number. For example, in a direct current (DC) circuit, watts = volts x amps. In other words, 1 kW = 1 kVA.
How is UPS kVA rating calculated?
This means that the formula for watts = volts x amps x power factor. For example, 1kVA UPS from N1C has the capacity to power 900 watts of connected equipment. This means the UPS has a “power factor” of 0.9.
What are UPS systems?
An uninterruptible power supply or a UPS system is an electrical apparatus that provides emergency power to a load when the input power source or mains power fails.
Which of the following tools is specifically used to measure voltage?
A digital multimeter is a test tool used to measure two or more electrical values—principally voltage (volts), current (amps) and resistance (ohms).
Which of the following tools is used to measure electrical resistance?
ohmmeter, instrument for measuring electrical resistance, which is expressed in ohms. In the simplest ohmmeters, the resistance to be measured may be connected to the instrument in parallel or in series.
Which of the following tools should be used to test power supply voltage output?
Use a multimeter to test the power supply.
Is a piano a computer?
Strangely enough, the key question that it boiled down to was “Why is a player piano not a computer?” It “processes information” by playing notes from its roll. But despite all that, it’s clearly not a computer.
Can you hoover the outside of a PC?
Yes. If you are careful even inside is possible. Also recommended because you collect a lot of dust inside it. Use a vacuum cleaner in a low power mode and use one of those delicate make-up brushes to clean it all.
How do I clean the dust out of my computer?
Use compressed air and a lint free cloth to blow and wipe any dust build up you can see. Pay particular attention to any crevices, plastic shrouds, and heat sinks. Thoroughly clean any dust filters too. To clean fan blades, hold them steady and wipe or blow each blade individually.
